DGPS Survey

Differential GPS (DGPS) is an advanced form of GPS that improves location accuracy by using a network of fixed ground-based reference stations.DGPS is a system that enhances the accuracy of standard GPS by correcting its signals. It uses a network of fixed ground-based reference stations to broadcast the difference between the positions indicated by the GPS satellites and the known fixed positions

The reference stations compare the GPS data received with their known positions and calculate the correction factors. These corrections are then transmitted to DGPS receivers, which apply the corrections to improve their location accuracy.DGPS is widely used in precise surveying, mapping, agriculture for machine guidance, and other applications requiring high accuracy.DGPS can provide positional accuracy within a range of sub-meter to a few meters, significantly better than standard GPS, which typically has an accuracy of 10-15 meters.There are two main DGPS techniques: real-time kinematic (RTK) and post-processing. RTK involves real-time data transmission from the reference station to the rover, while post-processing corrects GPS data after collection.